3D Computer Aided Design (CAD) programs have become a vital part of contemporary architectural design practices. The introduction of computers & CAD into the profession has revolutionised the design & construction documentation process (Cory, 2001). Previous research has shown that 3AD CAD programs have increased the efficiency of architectural practices (Bozell & Cory, 2001) & demonstrated the technical benefits of 3AD CAD (Novitski, 1998). Despite the technological advancements in CAD, the success of an architectural practice does not solely rely on the use of cutting edge technologies. The majority of research in the field focuses on (1) the technological developments of CAD & (2) the exploration of the use of CAD technologies for design innovation. There is a general lack of studies in identifying and examining the practical impacts of 3D CAD programs on contemporary architectural design practices, in particular, cost efficiency, time management & quality assurance. This appear presents the results from an empirical study conducted on a large-scale architecture firm in Australia. The interview results show that 3D CAD has reduced the time & cost in producing documentations. The results also show that 3D CAD has reduced the time & cost in producing documentations. The results also show that while 3D CAD has reduced the time in producing documentations, it has not lowered the documentation quality.